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JOHN E. TRIGHARDSO'N, o F? NEW YORK, N. Y'. Letters Patent No. 65,275, dated Mates, 1867.

IMPROVED PROCESS OF GHILLING OILS AND FATS.

TO ALL WHOM IT-MAY CONCERN:

Be it known that I, JQIIN E. RICHARDSON, of the city, county, and State of New York, have invented a new improvement in the Method of Chilling Oils; and I do hereby declare that the following'is afull, clear, and exact description thereof, whic'hwillenable others skilled in the art to hmke end use the same.

This invent-ion relates to a new manner of chilling all kinds of oils, so that they may be kept in a. fluid state after having undergone this process. It is adapted more particularly to the-production of parufiine from petroleum or other hydrocarbon liquids, but may also be used with the same effect in the treatment of lard from animal oils. v

It has heretofore been usual to place the lord, or similar substance which'wes contuined in'barrels, into a tank of suflicient dirnensions,and to surround the'barrcl with lumps ofice. The process could of.

' course only be performed in ice-houses, which had to be constructed for the special purpose. The lard thus chilled was then pressed, and the oil obtained retained its fluid state at a temperature ofhbout 45 Fahrenheit. My proces does away altogether with the houses, and the oil ohtaincd'by it remains fluid at a, temperature'ot' about 35 Fahrenheit, thus obtaining not only 'a superior article, butalso reducing considerabiy the expense of manufacturing the same. i p V A Iwill now describe my mannerof chilling the'oil. v

I take the lard out of the barrels and throw it into tanks of suitable dimensions. The bottom of thetank is covered with lumps of ice. The ice is thus held within the lard, not only around'it, and afi'ec'ts therefore even the most central portions of the lard, while, by the'old process, the lard in the centre of the barrels was scarcely chilled at all. A layer of'fine-iceshai'ings is then placed upon the lord, whereby a crust is formed on top, which prevents-the heat coming in contact with the lard. The ice contained in the lard does n t, melt very easily, and consequently a smaller quantity of the sumo is wasted than by the old process.- The frozen iard is then pressed, and the oil obtained will remain fluidnt 35 Fahrenheit.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, 13-

The method of chilling oil, substantially as herein set forth, so that the ice is brought in direct contact with the lord, in the manner specified. I Y

J. E. RICHARDSON. Witnesses.

WM. F. MONAMARA, Auax. F. ROBERTS. 

